Basic introduction

CMA is the abbreviation of China inspection body and laboratory certification approval. According to the measurement Law of the people's Republic of China, the measurement administrative department of the people's government at or above the provincial level conducts a comprehensive certification and evaluation on the testing ability and reliability of the testing institution. This kind of certification object is all the product quality supervision and inspection institutions and other kinds of laboratories that provide fair data to the society; Such as various product quality supervision and inspection stations, environmental testing stations, centers for Disease Control and prevention, etc.
The testing organization that has obtained the certificate of metrology certification is allowed to use CMA mark on the inspection report; The inspection report with CMA mark can be used for product quality evaluation, achievement and judicial appraisal, and has legal effect.
At present, China is carrying out compulsory metrology certification, examination and accreditation, and "Laboratory Accreditation" which laboratories voluntarily participate in, to ensure the fairness, scientificity and authority of testing institutions to provide services to the society. These certifications are based on the national "measurement Law", "standardization law" and "quality law" and other laws.
This work is a highly technical law enforcement and supervision work. All testing institutions that have passed the metrological certification of the National Metrology administrative department will be awarded the CMA measurement certification mark, which can be stamped on the upper left corner of the test report.

basic content

1. CMA is the abbreviation of China inspection body and laboratory mandatory approval. The testing institutions which have obtained the laboratory qualification certification (metrological certification) certificate can use the CMA mark on the test (detection and test) certificate and report according to the items approved on the certificate.
2. In 2001, the state promulgated the evaluation criteria for metrological certification / review and Accreditation (acceptance) (Trial), which was implemented on December 1 of the same year, and the original evaluation criteria jjg1021-90 was abolished at the same time. The evaluation system followed by metrological certification is the accreditation criteria for laboratory qualification, which supplements the provisions of China's metrological legal management.
3. Laboratory Qualification Accreditation (metrology certification) is divided into two levels. One is a national level, which is organized and implemented by the national certification and Accreditation Administration; The other is the provincial level, which is organized and implemented by the provincial quality and Technical Supervision Bureau, and the specific work is undertaken by the metrology certification office (Metrology Department). Whether it is a national or provincial level, the effectiveness of the implementation is completely the same. Whether it is a national or provincial certification, it is equally legal and effective for the testing institutions that have passed the certification, and there is no difference in the effectiveness of different departments.
4. According to the regulations on metrological certification management, the data issued by the qualified testing institutions for trade certification, product quality evaluation and achievement appraisal, as notarized data, has legal effect. It is illegal for a technical institution without metrological certification to provide notarized data to the society, which must be punished.
5. China's testing institutions that have passed metrological certification have covered agriculture, fishery, forestry, machinery, post and telecommunications, chemical industry, light industry, electrical engineering, metallurgy, geology, transportation, urban construction environmental protection, safety protection, water conservancy and other industries and departments, and have opened a relatively complete range of testing categories.

The difference of recognition

1. Laboratory qualification certification (metrology certification) is one of the important work contents of legal metrology management. For testing institutions, it is a compulsory approval system for testing institutions to enter the testing service market, that is, institutions with metrological certification qualification and legal status of metrological certification can provide testing services for the society.
2. National Laboratory Accreditation is consistent with the accreditation system of foreign laboratories, and it is a voluntary ability accreditation activity. It is proved that it meets the internationally accepted requirements for calibration and / or testing laboratory capacity through the testing technical institutions recognized by the laboratory.

Main differences between CMA and CNAs

Certification testing process

The certification of testing institutions is carried out in strict accordance with the provincial or national metrological certification procedures. It can be roughly divided into the following main steps:
1. Submit metrological certification application materials (including quality manual, procedure documents, etc.) to provincial or national metrological certification office;
2. The provincial or national metrology certification office shall review the application materials in writing;
3. Through written review, the provincial or national metrology certification office shall entrust the technical review team to conduct on-site verification review according to the evaluation criteria of metrological certification;

4. The provincial or National Bureau of quality and technical supervision will issue the metrological certification certificate and the seal of the metrological certification agency for the testing institutions that have passed the on-site review and meet the requirements of the standards, and publish them on the Internet.